Fatigue Cracking Characterisations of Waste-derived Bitumen Based on Crack Length

Abstract

This study aims to characterise fatigue cracking of two types of waste-derived (bio-oil and LDPE) bitumen. Modified Paris’ law and Griffith criterion were proposed to investigate crack propagation and initiation of the bitumen. Results show that the bio-oil delays and the LDPE accelerates crack initiation, and the bitumen itself dominates crack propagation of unaged bitumen. The bio-oil did not take the effects in altering bitumen’s fatigue performance after pressure ageing vessel (PAV) ageing. PAV-aged LDPE modified bitumen is more prone to fatigue crack in crack initiation phase, but it remains the same crack propagation rate as PAV-aged control bitumen.

Publication DOI: https://doi.org/10.1016/j.ijfatigue.2020.105974
Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Engineering Systems and Supply Chain Management
College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Aston Institute of Urban Technology and the Environment (ASTUTE)
College of Engineering & Physical Sciences > Aston Institute of Materials Research (AIMR)
Additional Information: © 2020, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Funding: The authors would like to acknowledge the financial support from Marie Skłodowska-Curie Individual Fellowships of EU under EU’s H2020 programme (Grant No. 789551), the National Nature Science Foundation of China (Grant No. 51978229), AIMR Seedcorn Grant from Aston University of Unite Kingdom (Grant No. 201901), and China Postdoctoral Science Foundation funded Project (Grant No. 2015M571928).
Uncontrolled Keywords: Ageing,Bio-oil,Fatigue cracking,Plastics,Waste-derived Bitumen,Modelling and Simulation,Materials Science(all),Mechanics of Materials,Mechanical Engineering,Industrial and Manufacturing Engineering
Full Text Link:
Related URLs: https://www.sci ... 320305065#ak005 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2021-01
Published Online Date: 2020-10-01
Accepted Date: 2020-09-28
Authors: Li, Linglin (ORCID Profile 0000-0001-8418-1491)
Gao, Yangming
Zhang, Yuqing (ORCID Profile 0000-0001-5825-0131)

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